/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:37:47,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:37:47,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:37:47,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 09:37:47,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 09:37:47,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 09:37:47,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 09:37:47,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 09:37:47,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 09:37:47,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 09:37:47,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 09:37:47,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 09:37:47,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 09:37:47,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 09:37:47,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 09:37:47,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 09:37:47,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 09:37:47,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 09:37:47,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 09:37:47,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 09:37:47,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 09:37:47,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 09:37:47,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 09:37:47,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 09:37:47,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 09:37:47,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 09:37:47,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 09:37:47,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 09:37:47,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 09:37:47,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:37:47,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:37:47,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:37:47,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:37:47,897 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:37:47,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:37:47,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:37:47,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:37:47,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:37:47,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:37:47,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:37:47,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:37:47,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:37:47,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:37:47,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:37:47,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:37:47,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:37:47,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:37:47,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:37:47,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:37:47,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:37:47,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:37:47,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:37:47,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:37:48,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:37:48,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:37:48,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:37:48,234 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:37:48,234 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:37:48,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-06-13 09:37:48,235 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-06-13 09:37:48,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:37:48,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:37:48,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:37:48,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:37:48,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:37:48,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:37:48,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:37:48,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:37:48,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:37:48,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... [2021-06-13 09:37:48,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:37:48,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:37:48,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:37:48,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:37:48,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:37:48,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:37:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:37:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:37:48,394 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:37:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:37:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:37:48,394 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:37:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:37:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:37:48,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 09:37:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 09:37:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 09:37:48,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-13 09:37:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-13 09:37:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-13 09:37:48,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-13 09:37:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-13 09:37:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-13 09:37:48,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-13 09:37:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-13 09:37:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-13 09:37:48,399 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:37:48,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:37:48,542 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 09:37:48,543 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:37:48 BoogieIcfgContainer [2021-06-13 09:37:48,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:37:48,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:37:48,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:37:48,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:37:48,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:37:48" (1/2) ... [2021-06-13 09:37:48,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb324e5 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:37:48, skipping insertion in model container [2021-06-13 09:37:48,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:37:48" (2/2) ... [2021-06-13 09:37:48,550 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-06-13 09:37:48,554 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:37:48,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:37:48,555 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:37:48,672 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-13 09:37:48,690 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 09:37:48,707 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:37:48,707 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:37:48,707 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:37:48,707 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:37:48,707 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:37:48,707 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:37:48,707 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:37:48,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork4======== [2021-06-13 09:37:48,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,748 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-13 09:37:48,749 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:37:48,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-13 09:37:48,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 09:37:48,757 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 09:37:48,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 09:37:48,758 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork4 was SAFE (1/5) [2021-06-13 09:37:48,759 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 09:37:48,773 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:37:48,773 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:37:48,773 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:37:48,773 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:37:48,773 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:37:48,773 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:37:48,773 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:37:48,773 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1======== [2021-06-13 09:37:48,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,807 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-13 09:37:48,807 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:37:48,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-13 09:37:48,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 09:37:48,810 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 09:37:48,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 09:37:48,810 INFO L301 ceAbstractionStarter]: Result for error location thread1 was SAFE (2/5) [2021-06-13 09:37:48,811 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 09:37:48,814 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:37:48,814 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:37:48,814 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:37:48,814 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:37:48,814 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:37:48,814 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:37:48,814 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:37:48,814 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork2======== [2021-06-13 09:37:48,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,840 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-13 09:37:48,840 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:37:48,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-13 09:37:48,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 09:37:48,843 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 09:37:48,843 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 09:37:48,844 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork2 was SAFE (3/5) [2021-06-13 09:37:48,844 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 09:37:48,847 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:37:48,847 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:37:48,847 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:37:48,847 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:37:48,848 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:37:48,848 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:37:48,848 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:37:48,848 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4======== [2021-06-13 09:37:48,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,871 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-13 09:37:48,871 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:37:48,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-13 09:37:48,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 09:37:48,873 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 09:37:48,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 09:37:48,873 INFO L301 ceAbstractionStarter]: Result for error location thread4 was SAFE (4/5) [2021-06-13 09:37:48,873 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 09:37:48,877 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:37:48,877 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:37:48,877 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:37:48,877 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:37:48,878 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:37:48,878 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:37:48,878 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:37:48,878 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:37:48,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,895 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-13 09:37:48,895 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:37:48,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-13 09:37:48,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-13 09:37:48,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-06-13 09:37:48,910 INFO L129 PetriNetUnfolder]: 4/50 cut-off events. [2021-06-13 09:37:48,910 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:37:48,910 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:48,911 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:48,911 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:48,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1010166742, now seen corresponding path program 1 times [2021-06-13 09:37:48,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:48,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025961256] [2021-06-13 09:37:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:49,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:49,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:37:49,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:49,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:49,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025961256] [2021-06-13 09:37:49,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025961256] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:49,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:49,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:37:49,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81811860] [2021-06-13 09:37:49,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:37:49,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:37:49,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:37:49,136 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-13 09:37:49,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:49,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-13 09:37:49,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:37:49,193 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-06-13 09:37:49,193 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-13 09:37:49,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 58 events. 6/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 1 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2021-06-13 09:37:49,195 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-13 09:37:49,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 51 transitions, 158 flow [2021-06-13 09:37:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:37:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:37:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-13 09:37:49,210 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-13 09:37:49,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:37:49,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,227 INFO L185 Difference]: Start difference. First operand has 66 places, 51 transitions, 150 flow. Second operand 3 states and 197 transitions. [2021-06-13 09:37:49,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 51 transitions, 158 flow [2021-06-13 09:37:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 123 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-06-13 09:37:49,235 INFO L241 Difference]: Finished difference. Result has 56 places, 51 transitions, 123 flow [2021-06-13 09:37:49,237 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2021-06-13 09:37:49,238 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2021-06-13 09:37:49,238 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 123 flow [2021-06-13 09:37:49,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,239 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:49,239 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:49,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:37:49,239 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1015464083, now seen corresponding path program 1 times [2021-06-13 09:37:49,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:49,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267124982] [2021-06-13 09:37:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:49,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:49,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:37:49,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:49,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:49,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267124982] [2021-06-13 09:37:49,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267124982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:49,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:49,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:37:49,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218642011] [2021-06-13 09:37:49,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:37:49,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:37:49,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:37:49,292 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-13 09:37:49,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:49,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-13 09:37:49,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:37:49,315 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-06-13 09:37:49,315 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 09:37:49,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 58 events. 6/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 1 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-06-13 09:37:49,318 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-13 09:37:49,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 131 flow [2021-06-13 09:37:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:37:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:37:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-13 09:37:49,323 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-13 09:37:49,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:37:49,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,328 INFO L185 Difference]: Start difference. First operand has 56 places, 51 transitions, 123 flow. Second operand 3 states and 197 transitions. [2021-06-13 09:37:49,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 131 flow [2021-06-13 09:37:49,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:37:49,331 INFO L241 Difference]: Finished difference. Result has 57 places, 51 transitions, 127 flow [2021-06-13 09:37:49,331 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2021-06-13 09:37:49,332 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2021-06-13 09:37:49,332 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 127 flow [2021-06-13 09:37:49,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:49,332 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:49,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:37:49,333 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash -648174871, now seen corresponding path program 1 times [2021-06-13 09:37:49,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:49,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064198741] [2021-06-13 09:37:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:49,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:49,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:37:49,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:49,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:49,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064198741] [2021-06-13 09:37:49,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064198741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:49,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:49,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:37:49,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978505319] [2021-06-13 09:37:49,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:37:49,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:49,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:37:49,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:37:49,390 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-13 09:37:49,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:49,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-13 09:37:49,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:37:49,407 INFO L129 PetriNetUnfolder]: 6/58 cut-off events. [2021-06-13 09:37:49,407 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-06-13 09:37:49,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 58 events. 6/58 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 1 based on Foata normal form. 2/55 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2021-06-13 09:37:49,412 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2021-06-13 09:37:49,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 135 flow [2021-06-13 09:37:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:37:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:37:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-13 09:37:49,415 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-13 09:37:49,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:37:49,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-13 09:37:49,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,422 INFO L185 Difference]: Start difference. First operand has 57 places, 51 transitions, 127 flow. Second operand 3 states and 197 transitions. [2021-06-13 09:37:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 135 flow [2021-06-13 09:37:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:37:49,425 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 131 flow [2021-06-13 09:37:49,425 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-06-13 09:37:49,425 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2021-06-13 09:37:49,425 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 131 flow [2021-06-13 09:37:49,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:49,425 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:49,426 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:49,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 09:37:49,426 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:49,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:49,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1641482845, now seen corresponding path program 2 times [2021-06-13 09:37:49,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:49,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128209537] [2021-06-13 09:37:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:49,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:37:49,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:49,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:49,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:49,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:49,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:49,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:49,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:37:49,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:37:49,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:37:49,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:37:50,001 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:37:50,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:50,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:50,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:50,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:50,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128209537] [2021-06-13 09:37:50,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128209537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:50,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:50,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-13 09:37:50,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548673581] [2021-06-13 09:37:50,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-13 09:37:50,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:50,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-13 09:37:50,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-13 09:37:50,010 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:37:50,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 131 flow. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:50,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:50,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:37:50,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:37:51,367 INFO L129 PetriNetUnfolder]: 1010/2065 cut-off events. [2021-06-13 09:37:51,367 INFO L130 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2021-06-13 09:37:51,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 2065 events. 1010/2065 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13234 event pairs, 434 based on Foata normal form. 1/1896 useless extension candidates. Maximal degree in co-relation 3640. Up to 1142 conditions per place. [2021-06-13 09:37:51,384 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 55 selfloop transitions, 66 changer transitions 0/152 dead transitions. [2021-06-13 09:37:51,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 152 transitions, 594 flow [2021-06-13 09:37:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-13 09:37:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-06-13 09:37:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1418 transitions. [2021-06-13 09:37:51,388 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7611379495437467 [2021-06-13 09:37:51,388 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1418 transitions. [2021-06-13 09:37:51,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1418 transitions. [2021-06-13 09:37:51,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:37:51,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1418 transitions. [2021-06-13 09:37:51,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.51851851851852) internal successors, (1418), 27 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 69.0) internal successors, (1932), 28 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,396 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 69.0) internal successors, (1932), 28 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,397 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 131 flow. Second operand 27 states and 1418 transitions. [2021-06-13 09:37:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 152 transitions, 594 flow [2021-06-13 09:37:51,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 152 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:37:51,402 INFO L241 Difference]: Finished difference. Result has 93 places, 116 transitions, 484 flow [2021-06-13 09:37:51,402 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=484, PETRI_PLACES=93, PETRI_TRANSITIONS=116} [2021-06-13 09:37:51,402 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2021-06-13 09:37:51,403 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 116 transitions, 484 flow [2021-06-13 09:37:51,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 17 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:51,403 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:51,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 09:37:51,403 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:51,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2053829507, now seen corresponding path program 3 times [2021-06-13 09:37:51,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:51,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549430773] [2021-06-13 09:37:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:51,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:51,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:37:51,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:51,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:51,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549430773] [2021-06-13 09:37:51,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549430773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:51,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:51,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:37:51,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353589551] [2021-06-13 09:37:51,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:37:51,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:51,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:37:51,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:37:51,430 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 69 [2021-06-13 09:37:51,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:51,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 69 [2021-06-13 09:37:51,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:37:51,541 INFO L129 PetriNetUnfolder]: 391/1042 cut-off events. [2021-06-13 09:37:51,541 INFO L130 PetriNetUnfolder]: For 64/70 co-relation queries the response was YES. [2021-06-13 09:37:51,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 1042 events. 391/1042 cut-off events. For 64/70 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6747 event pairs, 140 based on Foata normal form. 18/916 useless extension candidates. Maximal degree in co-relation 1797. Up to 440 conditions per place. [2021-06-13 09:37:51,551 INFO L132 encePairwiseOnDemand]: 66/69 looper letters, 2 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2021-06-13 09:37:51,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 494 flow [2021-06-13 09:37:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:37:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:37:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2021-06-13 09:37:51,553 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9516908212560387 [2021-06-13 09:37:51,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2021-06-13 09:37:51,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2021-06-13 09:37:51,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:37:51,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2021-06-13 09:37:51,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,554 INFO L185 Difference]: Start difference. First operand has 93 places, 116 transitions, 484 flow. Second operand 3 states and 197 transitions. [2021-06-13 09:37:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 494 flow [2021-06-13 09:37:51,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 09:37:51,564 INFO L241 Difference]: Finished difference. Result has 95 places, 116 transitions, 492 flow [2021-06-13 09:37:51,565 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2021-06-13 09:37:51,565 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2021-06-13 09:37:51,565 INFO L482 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 492 flow [2021-06-13 09:37:51,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,565 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:51,566 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:51,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 09:37:51,566 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1443065371, now seen corresponding path program 4 times [2021-06-13 09:37:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:51,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759996567] [2021-06-13 09:37:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:51,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:37:51,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:51,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:51,676 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-13 09:37:51,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:51,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:37:51,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:37:51,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-13 09:37:51,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-13 09:37:51,749 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-13 09:37:51,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-13 09:37:51,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:51,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:37:51,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:37:51,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:51,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:51,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:51,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-13 09:37:51,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 09:37:51,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:37:51,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:37:51,957 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:37:51,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:51,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:51,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:51,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:51,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759996567] [2021-06-13 09:37:51,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759996567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:51,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:51,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:37:51,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103547490] [2021-06-13 09:37:51,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:37:51,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:51,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:37:51,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:37:51,972 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:37:51,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 492 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:51,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:51,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:37:51,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:37:55,861 INFO L129 PetriNetUnfolder]: 1367/2818 cut-off events. [2021-06-13 09:37:55,861 INFO L130 PetriNetUnfolder]: For 1797/1839 co-relation queries the response was YES. [2021-06-13 09:37:55,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 2818 events. 1367/2818 cut-off events. For 1797/1839 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 18782 event pairs, 359 based on Foata normal form. 4/2597 useless extension candidates. Maximal degree in co-relation 7127. Up to 1244 conditions per place. [2021-06-13 09:37:55,886 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 158 selfloop transitions, 300 changer transitions 3/492 dead transitions. [2021-06-13 09:37:55,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 492 transitions, 2992 flow [2021-06-13 09:37:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-13 09:37:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-06-13 09:37:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4237 transitions. [2021-06-13 09:37:55,895 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7675724637681159 [2021-06-13 09:37:55,895 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 4237 transitions. [2021-06-13 09:37:55,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 4237 transitions. [2021-06-13 09:37:55,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:37:55,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 4237 transitions. [2021-06-13 09:37:55,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 52.9625) internal successors, (4237), 80 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:55,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 69.0) internal successors, (5589), 81 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:55,916 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 69.0) internal successors, (5589), 81 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:55,916 INFO L185 Difference]: Start difference. First operand has 95 places, 116 transitions, 492 flow. Second operand 80 states and 4237 transitions. [2021-06-13 09:37:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 492 transitions, 2992 flow [2021-06-13 09:37:55,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 492 transitions, 2980 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 09:37:55,930 INFO L241 Difference]: Finished difference. Result has 191 places, 450 transitions, 2770 flow [2021-06-13 09:37:55,931 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=2770, PETRI_PLACES=191, PETRI_TRANSITIONS=450} [2021-06-13 09:37:55,931 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 125 predicate places. [2021-06-13 09:37:55,931 INFO L482 AbstractCegarLoop]: Abstraction has has 191 places, 450 transitions, 2770 flow [2021-06-13 09:37:55,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:55,931 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:37:55,932 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:37:55,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 09:37:55,932 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:37:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:37:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1879662623, now seen corresponding path program 5 times [2021-06-13 09:37:55,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:37:55,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871742069] [2021-06-13 09:37:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:37:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:37:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:37:55,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:55,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:55,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:55,987 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-13 09:37:55,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:37:55,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:55,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:56,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:56,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:56,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:56,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:56,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:56,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:37:56,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:37:56,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:37:56,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:37:56,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:56,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:37:56,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:37:56,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:37:56,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:37:56,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:37:56,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:37:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:37:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:37:56,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:37:56,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871742069] [2021-06-13 09:37:56,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871742069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:37:56,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:37:56,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:37:56,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338390834] [2021-06-13 09:37:56,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:37:56,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:37:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:37:56,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:37:56,267 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:37:56,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 450 transitions, 2770 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:37:56,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:37:56,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:37:56,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:05,158 INFO L129 PetriNetUnfolder]: 2638/5443 cut-off events. [2021-06-13 09:38:05,158 INFO L130 PetriNetUnfolder]: For 10561/10941 co-relation queries the response was YES. [2021-06-13 09:38:05,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18287 conditions, 5443 events. 2638/5443 cut-off events. For 10561/10941 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 40823 event pairs, 239 based on Foata normal form. 48/5118 useless extension candidates. Maximal degree in co-relation 18165. Up to 2471 conditions per place. [2021-06-13 09:38:05,217 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 508 selfloop transitions, 1047 changer transitions 1/1587 dead transitions. [2021-06-13 09:38:05,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1587 transitions, 13254 flow [2021-06-13 09:38:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-06-13 09:38:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-06-13 09:38:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 10130 transitions. [2021-06-13 09:38:05,231 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7686470900675316 [2021-06-13 09:38:05,231 INFO L72 ComplementDD]: Start complementDD. Operand 191 states and 10130 transitions. [2021-06-13 09:38:05,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 191 states and 10130 transitions. [2021-06-13 09:38:05,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:05,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 191 states and 10130 transitions. [2021-06-13 09:38:05,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 192 states, 191 states have (on average 53.03664921465968) internal successors, (10130), 191 states have internal predecessors, (10130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:05,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 192 states, 192 states have (on average 69.0) internal successors, (13248), 192 states have internal predecessors, (13248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:05,272 INFO L81 ComplementDD]: Finished complementDD. Result has 192 states, 192 states have (on average 69.0) internal successors, (13248), 192 states have internal predecessors, (13248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:05,272 INFO L185 Difference]: Start difference. First operand has 191 places, 450 transitions, 2770 flow. Second operand 191 states and 10130 transitions. [2021-06-13 09:38:05,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1587 transitions, 13254 flow [2021-06-13 09:38:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1587 transitions, 12070 flow, removed 556 selfloop flow, removed 4 redundant places. [2021-06-13 09:38:05,352 INFO L241 Difference]: Finished difference. Result has 409 places, 1531 transitions, 11611 flow [2021-06-13 09:38:05,353 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=191, PETRI_FLOW=11611, PETRI_PLACES=409, PETRI_TRANSITIONS=1531} [2021-06-13 09:38:05,353 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 343 predicate places. [2021-06-13 09:38:05,353 INFO L482 AbstractCegarLoop]: Abstraction has has 409 places, 1531 transitions, 11611 flow [2021-06-13 09:38:05,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:05,354 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:05,354 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:05,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 09:38:05,354 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:38:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:05,355 INFO L82 PathProgramCache]: Analyzing trace with hash 457324829, now seen corresponding path program 6 times [2021-06-13 09:38:05,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:05,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905695792] [2021-06-13 09:38:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:05,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:05,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:05,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:05,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:05,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:05,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:05,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:05,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:05,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:05,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:05,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:05,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:05,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:05,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:05,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:05,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:05,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:38:05,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:38:05,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:38:05,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:05,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:05,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:05,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:05,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905695792] [2021-06-13 09:38:05,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905695792] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:05,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:05,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:38:05,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879396253] [2021-06-13 09:38:05,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:38:05,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:38:05,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:38:05,687 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:38:05,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 1531 transitions, 11611 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:05,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:05,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:38:05,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:12,982 INFO L129 PetriNetUnfolder]: 4275/8753 cut-off events. [2021-06-13 09:38:12,982 INFO L130 PetriNetUnfolder]: For 29107/30590 co-relation queries the response was YES. [2021-06-13 09:38:13,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34705 conditions, 8753 events. 4275/8753 cut-off events. For 29107/30590 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 71465 event pairs, 265 based on Foata normal form. 365/8546 useless extension candidates. Maximal degree in co-relation 34465. Up to 4605 conditions per place. [2021-06-13 09:38:13,103 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 1423 selfloop transitions, 1753 changer transitions 13/3220 dead transitions. [2021-06-13 09:38:13,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 3220 transitions, 32484 flow [2021-06-13 09:38:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-06-13 09:38:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-06-13 09:38:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 7723 transitions. [2021-06-13 09:38:13,114 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7666269604923566 [2021-06-13 09:38:13,114 INFO L72 ComplementDD]: Start complementDD. Operand 146 states and 7723 transitions. [2021-06-13 09:38:13,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 146 states and 7723 transitions. [2021-06-13 09:38:13,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:13,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 146 states and 7723 transitions. [2021-06-13 09:38:13,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 147 states, 146 states have (on average 52.897260273972606) internal successors, (7723), 146 states have internal predecessors, (7723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:13,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 147 states, 147 states have (on average 69.0) internal successors, (10143), 147 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:13,140 INFO L81 ComplementDD]: Finished complementDD. Result has 147 states, 147 states have (on average 69.0) internal successors, (10143), 147 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:13,141 INFO L185 Difference]: Start difference. First operand has 409 places, 1531 transitions, 11611 flow. Second operand 146 states and 7723 transitions. [2021-06-13 09:38:13,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 3220 transitions, 32484 flow [2021-06-13 09:38:13,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 3220 transitions, 26496 flow, removed 2984 selfloop flow, removed 1 redundant places. [2021-06-13 09:38:13,714 INFO L241 Difference]: Finished difference. Result has 634 places, 3062 transitions, 25749 flow [2021-06-13 09:38:13,716 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8727, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=146, PETRI_FLOW=25749, PETRI_PLACES=634, PETRI_TRANSITIONS=3062} [2021-06-13 09:38:13,716 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 568 predicate places. [2021-06-13 09:38:13,716 INFO L482 AbstractCegarLoop]: Abstraction has has 634 places, 3062 transitions, 25749 flow [2021-06-13 09:38:13,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:13,717 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:13,717 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:13,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 09:38:13,718 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:38:13,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:13,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1796374023, now seen corresponding path program 7 times [2021-06-13 09:38:13,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:13,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800571958] [2021-06-13 09:38:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:13,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:13,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:13,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:13,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:13,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:13,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:13,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:13,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:13,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:13,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:13,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:13,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:13,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:13,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:13,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:13,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:13,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:14,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:38:14,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:38:14,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:38:14,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:14,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:14,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:14,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:14,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800571958] [2021-06-13 09:38:14,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800571958] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:14,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:14,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:38:14,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554543630] [2021-06-13 09:38:14,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:38:14,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:38:14,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:38:14,042 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:38:14,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 3062 transitions, 25749 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:14,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:14,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:38:14,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:17,587 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2021-06-13 09:38:23,421 INFO L129 PetriNetUnfolder]: 6412/13141 cut-off events. [2021-06-13 09:38:23,422 INFO L130 PetriNetUnfolder]: For 66599/69119 co-relation queries the response was YES. [2021-06-13 09:38:23,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57221 conditions, 13141 events. 6412/13141 cut-off events. For 66599/69119 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 115694 event pairs, 144 based on Foata normal form. 771/13088 useless extension candidates. Maximal degree in co-relation 56913. Up to 5839 conditions per place. [2021-06-13 09:38:23,642 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 2416 selfloop transitions, 2957 changer transitions 20/5424 dead transitions. [2021-06-13 09:38:23,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 5424 transitions, 59466 flow [2021-06-13 09:38:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-13 09:38:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-06-13 09:38:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 6585 transitions. [2021-06-13 09:38:23,651 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7696353436185134 [2021-06-13 09:38:23,651 INFO L72 ComplementDD]: Start complementDD. Operand 124 states and 6585 transitions. [2021-06-13 09:38:23,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 6585 transitions. [2021-06-13 09:38:23,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:23,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 124 states and 6585 transitions. [2021-06-13 09:38:23,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 125 states, 124 states have (on average 53.104838709677416) internal successors, (6585), 124 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:23,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 125 states, 125 states have (on average 69.0) internal successors, (8625), 125 states have internal predecessors, (8625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:23,674 INFO L81 ComplementDD]: Finished complementDD. Result has 125 states, 125 states have (on average 69.0) internal successors, (8625), 125 states have internal predecessors, (8625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:23,674 INFO L185 Difference]: Start difference. First operand has 634 places, 3062 transitions, 25749 flow. Second operand 124 states and 6585 transitions. [2021-06-13 09:38:23,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 5424 transitions, 59466 flow [2021-06-13 09:38:24,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 754 places, 5424 transitions, 53952 flow, removed 2700 selfloop flow, removed 3 redundant places. [2021-06-13 09:38:24,606 INFO L241 Difference]: Finished difference. Result has 837 places, 5158 transitions, 52738 flow [2021-06-13 09:38:24,609 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=22876, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=124, PETRI_FLOW=52738, PETRI_PLACES=837, PETRI_TRANSITIONS=5158} [2021-06-13 09:38:24,609 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 771 predicate places. [2021-06-13 09:38:24,610 INFO L482 AbstractCegarLoop]: Abstraction has has 837 places, 5158 transitions, 52738 flow [2021-06-13 09:38:24,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:24,610 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:24,610 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:24,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 09:38:24,610 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:38:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash 313586987, now seen corresponding path program 8 times [2021-06-13 09:38:24,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:24,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878767803] [2021-06-13 09:38:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:24,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:24,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:24,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:24,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:24,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:24,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:24,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:38:24,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:38:24,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:38:24,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:24,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:24,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:24,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:24,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878767803] [2021-06-13 09:38:24,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878767803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:24,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:24,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-13 09:38:24,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47639882] [2021-06-13 09:38:24,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-13 09:38:24,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-13 09:38:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-13 09:38:24,847 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:38:24,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 5158 transitions, 52738 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:24,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:24,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:38:24,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:33,737 INFO L129 PetriNetUnfolder]: 6691/13639 cut-off events. [2021-06-13 09:38:33,737 INFO L130 PetriNetUnfolder]: For 142480/144300 co-relation queries the response was YES. [2021-06-13 09:38:33,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69714 conditions, 13639 events. 6691/13639 cut-off events. For 142480/144300 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 120110 event pairs, 173 based on Foata normal form. 258/13043 useless extension candidates. Maximal degree in co-relation 69419. Up to 8668 conditions per place. [2021-06-13 09:38:34,092 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 4888 selfloop transitions, 481 changer transitions 0/5400 dead transitions. [2021-06-13 09:38:34,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 5400 transitions, 67383 flow [2021-06-13 09:38:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-13 09:38:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-06-13 09:38:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1726 transitions. [2021-06-13 09:38:34,094 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7580149319279754 [2021-06-13 09:38:34,095 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1726 transitions. [2021-06-13 09:38:34,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1726 transitions. [2021-06-13 09:38:34,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:34,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1726 transitions. [2021-06-13 09:38:34,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.303030303030305) internal successors, (1726), 33 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:34,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 69.0) internal successors, (2346), 34 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:34,100 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 69.0) internal successors, (2346), 34 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:34,100 INFO L185 Difference]: Start difference. First operand has 837 places, 5158 transitions, 52738 flow. Second operand 33 states and 1726 transitions. [2021-06-13 09:38:34,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 5400 transitions, 67383 flow [2021-06-13 09:38:36,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 862 places, 5400 transitions, 64842 flow, removed 1215 selfloop flow, removed 7 redundant places. [2021-06-13 09:38:36,335 INFO L241 Difference]: Finished difference. Result has 870 places, 5345 transitions, 54288 flow [2021-06-13 09:38:36,341 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=50751, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=54288, PETRI_PLACES=870, PETRI_TRANSITIONS=5345} [2021-06-13 09:38:36,341 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 804 predicate places. [2021-06-13 09:38:36,341 INFO L482 AbstractCegarLoop]: Abstraction has has 870 places, 5345 transitions, 54288 flow [2021-06-13 09:38:36,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:36,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:36,342 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:36,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 09:38:36,342 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:38:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 512037265, now seen corresponding path program 9 times [2021-06-13 09:38:36,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:36,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288631915] [2021-06-13 09:38:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:36,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:36,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:36,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:36,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:36,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:36,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:36,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:38:36,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:38:36,701 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:38:36,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:36,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:36,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:36,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:36,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288631915] [2021-06-13 09:38:36,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288631915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:36,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:36,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-13 09:38:36,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870212668] [2021-06-13 09:38:36,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-13 09:38:36,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-13 09:38:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-13 09:38:36,717 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:38:36,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 870 places, 5345 transitions, 54288 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:36,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:36,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:38:36,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:45,575 INFO L129 PetriNetUnfolder]: 6765/13890 cut-off events. [2021-06-13 09:38:45,575 INFO L130 PetriNetUnfolder]: For 149963/151962 co-relation queries the response was YES. [2021-06-13 09:38:45,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70503 conditions, 13890 events. 6765/13890 cut-off events. For 149963/151962 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 123711 event pairs, 286 based on Foata normal form. 243/13226 useless extension candidates. Maximal degree in co-relation 70202. Up to 8782 conditions per place. [2021-06-13 09:38:45,876 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 4954 selfloop transitions, 482 changer transitions 0/5467 dead transitions. [2021-06-13 09:38:45,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 5467 transitions, 67450 flow [2021-06-13 09:38:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-13 09:38:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-06-13 09:38:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1777 transitions. [2021-06-13 09:38:45,878 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.757459505541347 [2021-06-13 09:38:45,878 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1777 transitions. [2021-06-13 09:38:45,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1777 transitions. [2021-06-13 09:38:45,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:45,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1777 transitions. [2021-06-13 09:38:45,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.26470588235294) internal successors, (1777), 34 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:45,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 69.0) internal successors, (2415), 35 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:45,884 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 69.0) internal successors, (2415), 35 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:45,884 INFO L185 Difference]: Start difference. First operand has 870 places, 5345 transitions, 54288 flow. Second operand 34 states and 1777 transitions. [2021-06-13 09:38:45,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 5467 transitions, 67450 flow [2021-06-13 09:38:47,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 5467 transitions, 66619 flow, removed 385 selfloop flow, removed 3 redundant places. [2021-06-13 09:38:48,019 INFO L241 Difference]: Finished difference. Result has 907 places, 5413 transitions, 55667 flow [2021-06-13 09:38:48,024 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=53525, PETRI_DIFFERENCE_MINUEND_PLACES=867, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4903, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=55667, PETRI_PLACES=907, PETRI_TRANSITIONS=5413} [2021-06-13 09:38:48,024 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 841 predicate places. [2021-06-13 09:38:48,024 INFO L482 AbstractCegarLoop]: Abstraction has has 907 places, 5413 transitions, 55667 flow [2021-06-13 09:38:48,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:48,025 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:48,025 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:48,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 09:38:48,025 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:38:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:48,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1815994029, now seen corresponding path program 10 times [2021-06-13 09:38:48,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:48,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807583180] [2021-06-13 09:38:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:48,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:48,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:48,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:48,065 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-13 09:38:48,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:48,072 INFO L142 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-06-13 09:38:48,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:48,080 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-06-13 09:38:48,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:48,088 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-13 09:38:48,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 09:38:48,102 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-06-13 09:38:48,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-13 09:38:48,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:48,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:48,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:48,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:48,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:48,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 09:38:48,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:48,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:38:48,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:38:48,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:38:48,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:38:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:38:48,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:48,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:48,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:48,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807583180] [2021-06-13 09:38:48,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807583180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:48,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:48,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:38:48,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011143983] [2021-06-13 09:38:48,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:38:48,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:38:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:38:48,282 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:38:48,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 5413 transitions, 55667 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:48,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:48,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:38:48,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:55,208 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2021-06-13 09:39:00,331 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2021-06-13 09:39:06,087 INFO L129 PetriNetUnfolder]: 9780/20271 cut-off events. [2021-06-13 09:39:06,088 INFO L130 PetriNetUnfolder]: For 210717/214089 co-relation queries the response was YES. [2021-06-13 09:39:06,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102491 conditions, 20271 events. 9780/20271 cut-off events. For 210717/214089 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 192712 event pairs, 258 based on Foata normal form. 812/19774 useless extension candidates. Maximal degree in co-relation 102165. Up to 10227 conditions per place. [2021-06-13 09:39:06,640 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 5454 selfloop transitions, 3269 changer transitions 31/8785 dead transitions. [2021-06-13 09:39:06,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1060 places, 8785 transitions, 109446 flow [2021-06-13 09:39:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-06-13 09:39:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-06-13 09:39:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 8181 transitions. [2021-06-13 09:39:06,645 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7699040090344438 [2021-06-13 09:39:06,645 INFO L72 ComplementDD]: Start complementDD. Operand 154 states and 8181 transitions. [2021-06-13 09:39:06,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 8181 transitions. [2021-06-13 09:39:06,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:39:06,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 154 states and 8181 transitions. [2021-06-13 09:39:06,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 155 states, 154 states have (on average 53.12337662337662) internal successors, (8181), 154 states have internal predecessors, (8181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:06,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 155 states, 155 states have (on average 69.0) internal successors, (10695), 155 states have internal predecessors, (10695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:06,668 INFO L81 ComplementDD]: Finished complementDD. Result has 155 states, 155 states have (on average 69.0) internal successors, (10695), 155 states have internal predecessors, (10695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:06,668 INFO L185 Difference]: Start difference. First operand has 907 places, 5413 transitions, 55667 flow. Second operand 154 states and 8181 transitions. [2021-06-13 09:39:06,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1060 places, 8785 transitions, 109446 flow [2021-06-13 09:39:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1051 places, 8785 transitions, 108290 flow, removed 270 selfloop flow, removed 9 redundant places. [2021-06-13 09:39:10,265 INFO L241 Difference]: Finished difference. Result has 1159 places, 8520 transitions, 101520 flow [2021-06-13 09:39:10,271 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=54631, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=767, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=154, PETRI_FLOW=101520, PETRI_PLACES=1159, PETRI_TRANSITIONS=8520} [2021-06-13 09:39:10,271 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1093 predicate places. [2021-06-13 09:39:10,271 INFO L482 AbstractCegarLoop]: Abstraction has has 1159 places, 8520 transitions, 101520 flow [2021-06-13 09:39:10,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:10,272 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:39:10,272 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:39:10,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 09:39:10,272 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:39:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:39:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1708497091, now seen corresponding path program 11 times [2021-06-13 09:39:10,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:39:10,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213024904] [2021-06-13 09:39:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:39:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:39:10,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:39:10,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:39:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:39:10,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:10,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:10,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:10,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:10,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:10,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:39:10,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:39:10,546 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:39:10,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:10,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:10,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:39:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:39:10,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:39:10,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213024904] [2021-06-13 09:39:10,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213024904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:39:10,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:39:10,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-13 09:39:10,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735015688] [2021-06-13 09:39:10,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-13 09:39:10,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:39:10,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-13 09:39:10,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-13 09:39:10,550 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:39:10,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1159 places, 8520 transitions, 101520 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:10,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:39:10,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:39:10,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:39:17,831 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-06-13 09:39:21,792 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-06-13 09:39:35,706 INFO L129 PetriNetUnfolder]: 10196/21087 cut-off events. [2021-06-13 09:39:35,706 INFO L130 PetriNetUnfolder]: For 293895/298479 co-relation queries the response was YES. [2021-06-13 09:39:36,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120578 conditions, 21087 events. 10196/21087 cut-off events. For 293895/298479 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 201414 event pairs, 225 based on Foata normal form. 437/20187 useless extension candidates. Maximal degree in co-relation 120148. Up to 13075 conditions per place. [2021-06-13 09:39:36,925 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 8018 selfloop transitions, 926 changer transitions 4/8979 dead transitions. [2021-06-13 09:39:36,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1222 places, 8979 transitions, 127013 flow [2021-06-13 09:39:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-13 09:39:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-06-13 09:39:36,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3379 transitions. [2021-06-13 09:39:36,929 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7651721014492754 [2021-06-13 09:39:36,929 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3379 transitions. [2021-06-13 09:39:36,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3379 transitions. [2021-06-13 09:39:36,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:39:36,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3379 transitions. [2021-06-13 09:39:36,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 52.796875) internal successors, (3379), 64 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:36,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:36,940 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:36,940 INFO L185 Difference]: Start difference. First operand has 1159 places, 8520 transitions, 101520 flow. Second operand 64 states and 3379 transitions. [2021-06-13 09:39:36,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1222 places, 8979 transitions, 127013 flow [2021-06-13 09:39:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1218 places, 8979 transitions, 117751 flow, removed 4531 selfloop flow, removed 4 redundant places. [2021-06-13 09:39:44,002 INFO L241 Difference]: Finished difference. Result has 1240 places, 8908 transitions, 101217 flow [2021-06-13 09:39:44,009 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=92334, PETRI_DIFFERENCE_MINUEND_PLACES=1155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=101217, PETRI_PLACES=1240, PETRI_TRANSITIONS=8908} [2021-06-13 09:39:44,009 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1174 predicate places. [2021-06-13 09:39:44,009 INFO L482 AbstractCegarLoop]: Abstraction has has 1240 places, 8908 transitions, 101217 flow [2021-06-13 09:39:44,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:44,009 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:39:44,010 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:39:44,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 09:39:44,010 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:39:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:39:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash 197960409, now seen corresponding path program 12 times [2021-06-13 09:39:44,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:39:44,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684205884] [2021-06-13 09:39:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:39:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:39:44,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:39:44,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:39:44,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:39:44,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:44,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:44,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:44,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:44,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:44,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:39:44,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:39:44,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:39:44,288 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:39:44,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:39:44,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:39:44,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:39:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:39:44,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:39:44,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684205884] [2021-06-13 09:39:44,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684205884] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:39:44,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:39:44,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:39:44,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066403826] [2021-06-13 09:39:44,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:39:44,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:39:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:39:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:39:44,293 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:39:44,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1240 places, 8908 transitions, 101217 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:39:44,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:39:44,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:39:44,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:40:10,102 INFO L129 PetriNetUnfolder]: 10337/21522 cut-off events. [2021-06-13 09:40:10,102 INFO L130 PetriNetUnfolder]: For 313394/317427 co-relation queries the response was YES. [2021-06-13 09:40:11,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120696 conditions, 21522 events. 10337/21522 cut-off events. For 313394/317427 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 207593 event pairs, 219 based on Foata normal form. 446/20590 useless extension candidates. Maximal degree in co-relation 120262. Up to 13161 conditions per place. [2021-06-13 09:40:11,528 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 8051 selfloop transitions, 1056 changer transitions 7/9145 dead transitions. [2021-06-13 09:40:11,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1303 places, 9145 transitions, 124440 flow [2021-06-13 09:40:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-13 09:40:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-06-13 09:40:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3380 transitions. [2021-06-13 09:40:11,531 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7653985507246377 [2021-06-13 09:40:11,531 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3380 transitions. [2021-06-13 09:40:11,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3380 transitions. [2021-06-13 09:40:11,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:40:11,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3380 transitions. [2021-06-13 09:40:11,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 52.8125) internal successors, (3380), 64 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:11,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:11,539 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:11,539 INFO L185 Difference]: Start difference. First operand has 1240 places, 8908 transitions, 101217 flow. Second operand 64 states and 3380 transitions. [2021-06-13 09:40:11,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1303 places, 9145 transitions, 124440 flow [2021-06-13 09:40:18,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1299 places, 9145 transitions, 120353 flow, removed 1967 selfloop flow, removed 4 redundant places. [2021-06-13 09:40:18,306 INFO L241 Difference]: Finished difference. Result has 1326 places, 9061 transitions, 103051 flow [2021-06-13 09:40:18,313 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=98392, PETRI_DIFFERENCE_MINUEND_PLACES=1236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=912, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7946, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=103051, PETRI_PLACES=1326, PETRI_TRANSITIONS=9061} [2021-06-13 09:40:18,313 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1260 predicate places. [2021-06-13 09:40:18,313 INFO L482 AbstractCegarLoop]: Abstraction has has 1326 places, 9061 transitions, 103051 flow [2021-06-13 09:40:18,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:18,313 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:40:18,313 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:40:18,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 09:40:18,314 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:40:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:40:18,314 INFO L82 PathProgramCache]: Analyzing trace with hash -426442377, now seen corresponding path program 13 times [2021-06-13 09:40:18,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:40:18,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757775510] [2021-06-13 09:40:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:40:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:40:18,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:40:18,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:40:18,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:40:18,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:18,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:18,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:18,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:18,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:18,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:18,613 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:40:18,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:40:18,638 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:40:18,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:18,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:18,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:40:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:40:18,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:40:18,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757775510] [2021-06-13 09:40:18,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757775510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:40:18,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:40:18,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:40:18,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243928065] [2021-06-13 09:40:18,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:40:18,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:40:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:40:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:40:18,643 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:40:18,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1326 places, 9061 transitions, 103051 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:18,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:40:18,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:40:18,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:40:47,056 INFO L129 PetriNetUnfolder]: 10419/21742 cut-off events. [2021-06-13 09:40:47,056 INFO L130 PetriNetUnfolder]: For 326100/330146 co-relation queries the response was YES. [2021-06-13 09:40:48,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122541 conditions, 21742 events. 10419/21742 cut-off events. For 326100/330146 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 210567 event pairs, 219 based on Foata normal form. 447/20804 useless extension candidates. Maximal degree in co-relation 122080. Up to 13660 conditions per place. [2021-06-13 09:40:48,356 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 8348 selfloop transitions, 850 changer transitions 0/9229 dead transitions. [2021-06-13 09:40:48,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1389 places, 9229 transitions, 125733 flow [2021-06-13 09:40:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-13 09:40:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-06-13 09:40:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3347 transitions. [2021-06-13 09:40:48,359 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7579257246376812 [2021-06-13 09:40:48,359 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3347 transitions. [2021-06-13 09:40:48,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3347 transitions. [2021-06-13 09:40:48,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:40:48,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3347 transitions. [2021-06-13 09:40:48,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 52.296875) internal successors, (3347), 64 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:48,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:48,366 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 69.0) internal successors, (4485), 65 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:48,366 INFO L185 Difference]: Start difference. First operand has 1326 places, 9061 transitions, 103051 flow. Second operand 64 states and 3347 transitions. [2021-06-13 09:40:48,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1389 places, 9229 transitions, 125733 flow [2021-06-13 09:40:55,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1372 places, 9229 transitions, 124045 flow, removed 535 selfloop flow, removed 17 redundant places. [2021-06-13 09:40:55,604 INFO L241 Difference]: Finished difference. Result has 1384 places, 9175 transitions, 106002 flow [2021-06-13 09:40:55,611 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=101527, PETRI_DIFFERENCE_MINUEND_PLACES=1309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=754, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=106002, PETRI_PLACES=1384, PETRI_TRANSITIONS=9175} [2021-06-13 09:40:55,611 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1318 predicate places. [2021-06-13 09:40:55,612 INFO L482 AbstractCegarLoop]: Abstraction has has 1384 places, 9175 transitions, 106002 flow [2021-06-13 09:40:55,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:55,612 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:40:55,612 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:40:55,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-13 09:40:55,612 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:40:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:40:55,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1723217253, now seen corresponding path program 14 times [2021-06-13 09:40:55,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:40:55,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048487325] [2021-06-13 09:40:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:40:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:40:55,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:40:55,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:40:55,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:40:55,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:55,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:55,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:40:55,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:40:55,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:40:55,865 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:40:55,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:40:55,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:40:55,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:40:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:40:55,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:40:55,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048487325] [2021-06-13 09:40:55,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048487325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:40:55,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:40:55,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-13 09:40:55,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930970132] [2021-06-13 09:40:55,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-13 09:40:55,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:40:55,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-13 09:40:55,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-13 09:40:55,870 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:40:55,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1384 places, 9175 transitions, 106002 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:40:55,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:40:55,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:40:55,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:41:22,475 INFO L129 PetriNetUnfolder]: 10442/21827 cut-off events. [2021-06-13 09:41:22,475 INFO L130 PetriNetUnfolder]: For 359030/363092 co-relation queries the response was YES. [2021-06-13 09:41:24,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124337 conditions, 21827 events. 10442/21827 cut-off events. For 359030/363092 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 211665 event pairs, 227 based on Foata normal form. 428/20856 useless extension candidates. Maximal degree in co-relation 123864. Up to 13768 conditions per place. [2021-06-13 09:41:24,119 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 8482 selfloop transitions, 740 changer transitions 0/9253 dead transitions. [2021-06-13 09:41:24,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1420 places, 9253 transitions, 126737 flow [2021-06-13 09:41:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-13 09:41:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-06-13 09:41:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1932 transitions. [2021-06-13 09:41:24,121 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7567567567567568 [2021-06-13 09:41:24,121 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1932 transitions. [2021-06-13 09:41:24,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1932 transitions. [2021-06-13 09:41:24,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:41:24,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1932 transitions. [2021-06-13 09:41:24,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.21621621621622) internal successors, (1932), 37 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:24,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 69.0) internal successors, (2622), 38 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:24,124 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 69.0) internal successors, (2622), 38 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:24,124 INFO L185 Difference]: Start difference. First operand has 1384 places, 9175 transitions, 106002 flow. Second operand 37 states and 1932 transitions. [2021-06-13 09:41:24,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1420 places, 9253 transitions, 126737 flow [2021-06-13 09:41:31,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1400 places, 9253 transitions, 123857 flow, removed 983 selfloop flow, removed 20 redundant places. [2021-06-13 09:41:31,200 INFO L241 Difference]: Finished difference. Result has 1405 places, 9203 transitions, 105509 flow [2021-06-13 09:41:31,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=103166, PETRI_DIFFERENCE_MINUEND_PLACES=1364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=717, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=105509, PETRI_PLACES=1405, PETRI_TRANSITIONS=9203} [2021-06-13 09:41:31,208 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1339 predicate places. [2021-06-13 09:41:31,208 INFO L482 AbstractCegarLoop]: Abstraction has has 1405 places, 9203 transitions, 105509 flow [2021-06-13 09:41:31,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:31,208 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:41:31,209 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:41:31,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-13 09:41:31,209 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:41:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:41:31,209 INFO L82 PathProgramCache]: Analyzing trace with hash 206560489, now seen corresponding path program 15 times [2021-06-13 09:41:31,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:41:31,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098475639] [2021-06-13 09:41:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:41:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:41:31,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:41:31,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:41:31,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:41:31,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:41:31,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:41:31,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:41:31,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:41:31,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:41:31,469 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:41:31,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:41:31,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:41:31,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:41:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:41:31,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:41:31,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098475639] [2021-06-13 09:41:31,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098475639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:41:31,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:41:31,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-13 09:41:31,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223504284] [2021-06-13 09:41:31,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-13 09:41:31,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:41:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-13 09:41:31,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-13 09:41:31,476 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:41:31,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1405 places, 9203 transitions, 105509 flow. Second operand has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:31,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:41:31,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:41:31,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:41:57,882 INFO L129 PetriNetUnfolder]: 10448/21906 cut-off events. [2021-06-13 09:41:57,882 INFO L130 PetriNetUnfolder]: For 354487/358423 co-relation queries the response was YES. [2021-06-13 09:41:59,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124723 conditions, 21906 events. 10448/21906 cut-off events. For 354487/358423 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 213133 event pairs, 244 based on Foata normal form. 419/20922 useless extension candidates. Maximal degree in co-relation 124244. Up to 13810 conditions per place. [2021-06-13 09:41:59,225 INFO L132 encePairwiseOnDemand]: 49/69 looper letters, 8475 selfloop transitions, 750 changer transitions 0/9256 dead transitions. [2021-06-13 09:41:59,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1430 places, 9256 transitions, 125141 flow [2021-06-13 09:41:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-13 09:41:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-06-13 09:41:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1362 transitions. [2021-06-13 09:41:59,232 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7591973244147158 [2021-06-13 09:41:59,232 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1362 transitions. [2021-06-13 09:41:59,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1362 transitions. [2021-06-13 09:41:59,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:41:59,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1362 transitions. [2021-06-13 09:41:59,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 52.38461538461539) internal successors, (1362), 26 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:59,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 69.0) internal successors, (1863), 27 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:59,235 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 69.0) internal successors, (1863), 27 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:41:59,235 INFO L185 Difference]: Start difference. First operand has 1405 places, 9203 transitions, 105509 flow. Second operand 26 states and 1362 transitions. [2021-06-13 09:41:59,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1430 places, 9256 transitions, 125141 flow [2021-06-13 09:42:06,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1415 places, 9256 transitions, 123460 flow, removed 399 selfloop flow, removed 15 redundant places. [2021-06-13 09:42:06,377 INFO L241 Difference]: Finished difference. Result has 1420 places, 9226 transitions, 106019 flow [2021-06-13 09:42:06,384 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=103828, PETRI_DIFFERENCE_MINUEND_PLACES=1390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=731, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=106019, PETRI_PLACES=1420, PETRI_TRANSITIONS=9226} [2021-06-13 09:42:06,384 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, 1354 predicate places. [2021-06-13 09:42:06,384 INFO L482 AbstractCegarLoop]: Abstraction has has 1420 places, 9226 transitions, 106019 flow [2021-06-13 09:42:06,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 49.111111111111114) internal successors, (884), 18 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:42:06,385 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:42:06,385 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:42:06,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-13 09:42:06,385 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 09:42:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:42:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 856597259, now seen corresponding path program 16 times [2021-06-13 09:42:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:42:06,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967212550] [2021-06-13 09:42:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:42:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:42:06,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:42:06,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:42:06,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:42:06,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:42:06,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:42:06,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:42:06,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:42:06,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:42:06,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 09:42:06,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-13 09:42:06,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 09:42:06,687 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-13 09:42:06,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 09:42:06,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:42:06,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:42:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:42:06,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:42:06,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967212550] [2021-06-13 09:42:06,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967212550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:42:06,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:42:06,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-13 09:42:06,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120198315] [2021-06-13 09:42:06,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-13 09:42:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:42:06,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-13 09:42:06,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-13 09:42:06,692 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 69 [2021-06-13 09:42:06,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1420 places, 9226 transitions, 106019 flow. Second operand has 19 states, 19 states have (on average 49.05263157894737) internal successors, (932), 19 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:42:06,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:42:06,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 69 [2021-06-13 09:42:06,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand